My foxface that I put in my tank on Friday. 3 days ago is swimming up to the surface constantly. His color at the moment is mainly whitish besides the yellow tail. He had a lot more yellow last night before I went to bed. I have 2 power heads rated at 325 gph facing the surface on opposite sides of my tank. My levels are suddenly ammonia 0.25. Nitrates 5.0. Nitrites 0.25. And ph 7.8. Please help with input. Thanks. Salinity is 1.023